Oral health, your bones & joints
If you are about to start a bone-strengthening medication, the order of events matters: dental first, then the prescription.
Before you start an osteoporosis medication
Medications that strengthen bone by slowing its breakdown — bisphosphonates such as alendronate, and denosumab — work throughout the skeleton, including the jaw. In a small number of patients, an area of jawbone fails to heal properly afterwards, a condition called medication-related osteonecrosis of the jaw (MRONJ). The professional guidance is consistent: have a dental examination and resolve active infection or non-restorable teeth BEFORE beginning treatment, so healing can finish first. The oral and maxillofacial surgeons’ position paper states plainly that oral health maintenance and dental prophylaxis before starting antiresorptive therapy can decrease how often MRONJ occurs. Some perspective on the risk, because it is easy to frighten people with this topic: at standard osteoporosis doses it is roughly 5 in 10,000 or fewer, against a background rate in untreated people that is not zero. The frightening percentages you may find online come from cancer patients on far higher intravenous doses. The point is not to avoid a medication your physician recommends — it is to sequence the dentistry first.
If you already have a joint replacement
Many patients arrive convinced they must take antibiotics before every cleaning. Current guidance from the American Dental Association, supported by the American Academy of Orthopaedic Surgeons, is that routine antibiotics before dental procedures are generally NOT recommended simply because someone has an artificial hip or knee. Reviews found no association between dental procedures and prosthetic joint infection. The reasoning is intuitive once you hear it: brushing and chewing release small amounts of bacteria into the bloodstream every single day, far more often than a dental visit does. Where an individual case genuinely warrants it, that is a shared decision between you, us, and your orthopaedic surgeon — not an automatic prescription.
Bone density, menopause & the jaw
The jawbone is skeletal bone, and it reflects what the rest of the skeleton is doing. Research in postmenopausal women has associated lower bone mineral density with greater loss of the attachment holding teeth in place. Hormonal changes at menopause are part of this picture. To be clear about the limits: treating gum disease is not a treatment for osteoporosis and does not change bone density elsewhere in the body, and hormone replacement therapy is not prescribed for periodontal reasons. What we can do is protect the bone around your teeth, and keep an eye on it more closely when your systemic bone health calls for it.
By the numbers
Findings as reported in the studies linked below. Every figure was read from the source itself. Where a result is borderline or contested, we say so.
- ≤0.05% ≤5 per 10,000
- Risk of MRONJ for people taking oral bisphosphonates at standard osteoporosis doses. In placebo groups the rate was 0–0.02%, so the increase is real but small. AAOMS 2022 position paper
- 0.04–0.3%
- Risk range reported for denosumab at osteoporosis doses; 0.3% was after ten years of follow-up. AAOMS 2022 position paper
- <5%
- Risk for cancer patients receiving the much higher intravenous doses. This is the group the alarming numbers come from — it is not the osteoporosis picture. AAOMS 2022 position paper
- 2.5-fold relative risk reduction
- Reduction in MRONJ from a regimented dental surveillance programme versus treating problems only as they appeared. Important caveat: this was measured in prostate cancer patients with bone metastasis, not osteoporosis patients. Prospective study cited in the AAOMS 2022 position paper
- 0.34 mm 95% CI 0.20–0.49
- Additional clinical attachment loss in postmenopausal women with osteoporosis compared with normal bone density. A modest average difference. Penoni 2017, meta-analysis
The research
Peer-reviewed sources behind the associations described above. We link them so you can read the primary evidence yourself.
- Ruggiero, S. L., Dodson, T. B., Aghaloo, T., Carlson, E. R., Ward, B. B., & Kademani, D. (2022). American Association of Oral and Maxillofacial Surgeons’ Position Paper on Medication-Related Osteonecrosis of the Jaws — 2022 Update. Journal of Oral and Maxillofacial Surgery, 80(5), 920–943.
- Sollecito, T. P., et al. (2015). The use of prophylactic antibiotics prior to dental procedures in patients with prosthetic joints: Evidence-based clinical practice guideline for dental practitioners — a report of the American Dental Association Council on Scientific Affairs. Journal of the American Dental Association, 146(1), 11–16.e8.
- American Academy of Orthopaedic Surgeons (2025). AAOS Clinical Practice Guideline Summary: Prevention of Total Hip and Knee Arthroplasty Periprosthetic Joint Infection in Patients Undergoing Dental Procedures. Journal of the American Academy of Orthopaedic Surgeons, 33(21), e1260–e1267.
- Penoni, D. C., Fidalgo, T. K. S., Torres, S. R., Varela, V. M., Masterson, D., Leão, A. T. T., & Maia, L. C. (2017). Bone Density and Clinical Periodontal Attachment in Postmenopausal Women: A Systematic Review and Meta-Analysis. Journal of Dental Research, 96(3), 261–269.
- Chaves, J. D. P., Figueredo, T. F. M., Warnavin, S. V. S. C., Pannuti, C. M., & Steffens, J. P. (2020). Sex hormone replacement therapy in periodontology — A systematic review. Oral Diseases, 26(2), 270–284.
Curious what your own mouth is telling us?
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Educational information describing associations reported in scientific research. It is not a diagnosis, medical advice, or a promise of treatment outcomes. Always consult your physician about your medical care. Content pending clinical review by Dr. Uddaraju and Dr. Bautista.